A bundle subscription combining 500GB of storage with benefits of other Proton services like Mail, Calendar, and VPN will set you back $10 per month. The free tier offers 1GB of cloud storage, but you can upgrade to 200GB of storage for $4/month. Proton Drive allows users to generate temporary viewing passwords for content with predefined expiration dates, for when you want to share your files with non-Proton users temporarily. The Proton Drive app is free to download and offers security features like encryption for file metadata, so bad actors can't even determine the type of file they may be dealing with. Proton Drive brings end-to-end encrypted file storage to iOS and Android and aligns with Proton's mission to ensure that privacy tools are easy to use and freely available. While there have always been apps to upload and store files on your phone, they provide poor privacy and data leaks from mobile devices are common. People have historically had very few options for secure personal cloud storage.

Secure dropbox alternative